MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. These connectors, compliant with military specification MIL-DTL-38999 I, come in high strength aluminum shells with options for plating including cadmium-free finishes. Their construction includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all featuring bayonet coupling for secure connections. Utilizing M39029 rear release crimp contacts, they ensure reliable performance with gold plating for enhanced conductivity. Suitable for demanding environments, these connectors are ideal for military, aerospace, and industrial applications requiring rugged and durable connectivity solutions.